Oakland Raiders quarterback Terrelle Pryor (2) rolls out of the pocket against the Denver Broncos in the third quarter of an NFL football game, Monday, Sept. 23, 2013, in Denver. (AP Photo/Jack Dempsey)

Photo: Jack Dempsey, Associated Press

Oakland Raiders quarterback Terrelle Pryor (2) rolls out of the...

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Oakland Raiders quarterback Terrelle Pryor (2) is sacked by the Denver Broncos in the fourth quarter of an NFL football game, Monday, Sept. 23, 2013, in Denver. (AP Photo/Jack Dempsey)

When the Raiders take on the undefeated Chiefs on Sunday, all eyes will be on the quarterback who has led his team to a surprising start with his leadership and lack of mistakes.

Oh, you thought we meant Alex Smith? No, we were talking about the edgier "game manager," the Raiders' Terrelle Pryor. He has completed 68.3 percent of his passes and has thrown 75 straight without an interception to go 2-2 in his four starts.

"I think that I'm a little bit more risky than" Smith, Pryor said. "Just from watching him, he does his thing, and that's him. I just go and play ball. Whatever I see downfield, I'm going to take a shot.

"I know they do a lot of check-downs, something like 36 percent or something like that; that's efficient, but we want to try and be explosive, and we want to try and attack. That's what I want to do. I want to attack."

Pryor completed his first 10 passes and went 18-of-23 for 221 yards and two touchdowns last Sunday in the win over the Chargers. His 135.7 passer rating was the highest for a Raider since Rich Gannon had a 138.9 in 2002.

Pryor knows the Chiefs are a much more difficult test. Kansas City's front line of Tamba Hali, Dontari Poe and Justin Houston is one of the most physically imposing in the NFL, and those three have combined for 17 of the Chiefs' league-high 21 sacks.

"This defense is pretty good, so it's going to be a good test to not turn the ball over," Pryor said. "They're good. They're first in the NFL in turnovers (differential), which allows their offense to start on the opponent's side of the field. So they're playing good football."

So is Pryor, who has improved weekly after beating out Matt Flynn for the starting job in the preseason. Pryor's completion percentage under pressure (55.6) ranks fourth in the NFL, while his accuracy percentage (63.6) is 11th, both according to Pro Football Focus.

In his past two starts - sandwiched around the game he missed due to a concussion - Pryor has connected on 72.5 percent of his attempts for 502 yards with three touchdowns and no interceptions. He is 5-for-8 on passes thrown more than 20 yards downfield for 201 yards and two touchdowns.

Pryor also leads the Raiders with 229 rushing yards on 37 carries.

"He's improved tremendously," Raiders head coach Dennis Allen said. "When you go back and look at where he was at the end of last year in the San Diego game, and then compare that to the way he played last (week), it's night and day how the kid performs. So, he's done a great job.

Pryor said he is planning to visit throwing guru (and former major-league pitching coach) Tom House again during the bye week. The two worked out in the offseason, and Pryor credits House for a lot of his improved throwing mechanics.

Pryor then told reporters how he had learned from the mistake of former Broncos quarterback Tim Tebow, who had his mechanics cleaned up in sessions with House the previous offseason.

House "said he was ready to go; Tebow was throwing the ball great and wasn't missing anything," Pryor said. "Then Tebow went to camp and he reverted back to himself. Because the bullets were flying."

Pryor said he wanted to make sure he didn't go back to his bad habits - namely bad footwork, not bringing his elbow up and not opening up his upper body - when he left House and returned for the Raiders' offseason workouts.

"That's the main thing," Pryor said. "How hard are you working at your craft to make sure in your mind that it stays there? That was my key, the only thing I was worried about. When people are rushing me, I didn't want to go back to the old thing ...

"I am very proud of that. I am very locked in."

Raiders at Chiefs

10 a.m., Channel: 5 Channel: 13 Channel: 46 , 95.7

Spotlight on: Chiefs RB Jamaal Charles. Charles has at least 100 yards from scrimmage and a touchdown in all five games. The last player to do that to start a season was O.J. Simpson in 1975. Charles wasn't a factor in Kansas City's two losses to the Raiders last season, but that was because the since-fired staff forgot about him. New coach Andy Reid is no dummy, and Charles leads the team with 28 receptions, as well as 92 carries. "It's going to come down to getting 11 hats to the ball," Raiders head coach Dennis Allen said. "He does a great job out in space and makes a lot of people miss, so it's going to be critical that we play fast and if somebody does miss a tackle out in space, we've got other guys there to back them up. That's what good defenses do."

Big 3

McFadden in question? Oakland RB Darren McFadden, coming back from a hamstring injury that forced him to miss last week's win, is apparently a game-time decision. He practiced in limited fashion, but Allen isn't saying if the staff wants to keep him on ice until after next week's bye. McFadden has two straight 100-yard rushing games against the Chiefs (114 and 110).

Danger lurking: Kansas City receiver Dwayne Bowe has been fairly quiet this season, but he has made seven players miss tackles on his 17 catches. That is a rate of 0.41 missed tackles per catch, tops among wide receivers, per Pro Football Focus. And the Raiders don't tackle well.

Seeing red on third down: The Chiefs have the top third-down defense in the NFL, allowing just 23.5 percent to be converted into first downs, and have been particularly stingy in long-yardage situations, allowing just 5 of 47 conversions on 3rd-and-6 or more.